Below is a diagram of how far the proton is to the electron in a hydrogen atom (Distance), and the diameter of the proton (Diameter).
The ratio between the Distance to the Diameter is 60,342 to 1.
The ratio between the Distance to the Diameter is 60,342 to 1.
Now, lets compare this ratio with a pencil eraser and the school.
We learned earlier this year that the distance of the school is 400 ft, which equals 12,112 cm long.
Let's assume that you measure the diameter of your pencil eraser to be 0.7 cm wide.
Question:
If the eraser represents the diameter of the proton, and placed on the windows at the end of the main hallway of the school, would the electron be placed inside or outside the school on the windows of the opposite side of the school?
Your task:
Calculate the distance the electron would be placed based on the ratio above, then answer the question if whether the electron would be either inside or outside the school, and by how much? Then answer the questions below.
Data Analysis Questions.
We learned earlier this year that the distance of the school is 400 ft, which equals 12,112 cm long.
Let's assume that you measure the diameter of your pencil eraser to be 0.7 cm wide.
Question:
If the eraser represents the diameter of the proton, and placed on the windows at the end of the main hallway of the school, would the electron be placed inside or outside the school on the windows of the opposite side of the school?
Your task:
Calculate the distance the electron would be placed based on the ratio above, then answer the question if whether the electron would be either inside or outside the school, and by how much? Then answer the questions below.
Data Analysis Questions.
- How big would the school have to be in order to contain the radius of the proton and electron if the proton was the size of 0.7 cm?
- Based on the program you just worked with on Phet, where you built atoms, is this model to scale? (A screen shot is made below of the Hydrogen atom from Phet). Make an argument provided with evidence to support your reasoning.
- What is the shortcoming of this atomic model based on your findings?
- What modifications would we need to make to this model to make it more correct?
Answers:
Data Analysis Questions:
- If the eraser represents the diameter of the proton, and placed on the windows at the end of the main hallway of the school, would the electron be placed inside or outside the school on the windows of the opposite side of the school?
- The total distance the electron would be if the proton was 0.7 cm in diameter would be about 42,239 cm from the proton.
- This means that the electron would be outside the school.
Data Analysis Questions:
- How big would the school have to be in order to contain the radius of the proton and electron if the proton was the size of 0.7 cm?
- 42, 239 cm
- 42, 239 cm
- Based on the program you just worked with on Phet, where you built atoms, is this model to scale? (A screen shot is made below of the Hydrogen atom from Phet). Make an argument provided with evidence to support your reasoning.
- No. This model is clearly not to scale. If it were, the electron would be more than a quarter of a mile away, and the electron is also much smaller than the proton.
- No. This model is clearly not to scale. If it were, the electron would be more than a quarter of a mile away, and the electron is also much smaller than the proton.
- What is the shortcoming of this atomic model based on your findings?
- The scale is clearly off.
- The scale is clearly off.
- What modifications would we need to make to this model to make it more correct?
- We would have to extend the electron out to nearly a quarter of a mile.
- We would have to extend the electron out to nearly a quarter of a mile.